# Realization of Superadiabatic Two-qubit Gates Using Parametric Modulation in Superconducting Circuits

## TL;DR

This paper demonstrates a fast, robust superadiabatic two-qubit gate in superconducting circuits using parametric modulation, achieving near-quantum-limit speed and low error rates, advancing scalable quantum computing.

## Contribution

It introduces and experimentally implements superadiabatic two-qubit gates with parametric modulation, enhancing speed and robustness over traditional methods.

## Key findings

- Achieved a CZ gate with 5.8% error rate.
- Demonstrated preservation of adiabaticity at near-quantum-limit speeds.
- Showed robustness against control instability.

## Abstract

Fast robust two-qubit gate operation with low susceptibility to crosstalk are the key to scalable quantum information processing. Parametrically driven gate is inherently insensitive to crosstalk while superadiabatic control can speed up the gate without losing accuracy. We propose and experimentally implement superadiabatic two-qubit gates using parametric modulation on superconducting quantum circuits. Our results demonstrate the preservation of adiabaticity at a gate speed close to the quantum limit, in addition to robustness against control instability. We demonstrate a CZ gate with error rate of 5.8$\%$, limited largely by qubit decoherence, promising future improvement and scalable implementation.